7a+19+6a=21

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Solution for 7a+19+6a=21 equation: 



7a+19+6a=21

We move all terms to the left:

7a+19+6a-(21)=0

We add all the numbers together, and all the variables

13a-2=0

We move all terms containing a to the left, all other terms to the right

13a=2

a=2/13

a=2/13

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